Earn your degree with these classic puzzles! This set of disentanglement puzzles combines the artistry of a vintage blacksmith's puzzle with the modern look and feel of a well-made brainteaser. The challenges within the box of nails include the Nail Biter, Nail Jail, S-Nail, Last Nail in the Coffin, and the tremendously difficult Bed of Nails. Packaged in an attractive wooden casing, this set will look just as much at home on your office's conference table as it does on your coffee table.